Value Collection 20925 29/64 in Mechanics Drill Bit Hss

Product Description

The VALUE COLLECTION 20925 is a mechanics-length drill bit designed for general-purpose drilling in metal and ferrous materials. It measures 29/64 inches (0.4531 inches) in diameter with a 4-5/8 inch overall length and a 3-inch flute length. The 135-degree split point geometry reduces walking on contact and requires no center punch on most surfaces. Constructed from high-speed steel with an oxide finish, this bit handles demanding drilling tasks in production and maintenance environments. The Weldon flat shank with three flats prevents rotation in the chuck during high-torque applications.

This drill bit is suited for drilling carbon steel, cast iron, high alloy steel, high tensile strength alloy, stainless steel, and general steel stock. The mechanics-length body fits standard drill presses, handheld electric drills, and magnetic-base drills where a shorter overall length is preferred over jobber-length bits. It is a common choice for machinists, millwrights, and maintenance technicians working in fabrication shops or on-site mechanical service where controlled hole entry and accurate sizing are required.

Key Features

• 135-degree split point reduces thrust force and self-centers on contact without a pilot punch
• High-speed steel construction maintains hardness and edge retention at elevated cutting temperatures
• Weldon flat shank with three flats locks securely in set-screw chucks to prevent slippage under torque
• Oxide surface finish provides mild corrosion resistance and reduces friction during cutting
• Web-thinned parallel web configuration improves chip evacuation and cutting efficiency
• Mechanics-length body (4-5/8 inches OAL) offers greater rigidity and control compared to jobber-length bits

Compatibility

Designed as a general-purpose mechanics-length drill bit compatible with Weldon flat set-screw chucks on standard drill presses and handheld drills. Suitable for use in carbon steel, cast iron, high alloy steel, high tensile strength alloy, stainless steel, and general steel workpieces.

Installation Notes

Secure the Weldon shank fully into the chuck and tighten all set screws before operation to prevent bit pull-out under load. Ensure the workpiece is clamped or fixtured before drilling to prevent rotation and injury. Apply cutting fluid when drilling stainless steel or high-alloy materials to extend tool life and maintain cut quality. Inspect the cutting edges for wear before each use and replace the bit if chipping or dulling is evident.